Chemical Engineering MCQs

Page No. 42

Oxidation of ammonia is________________?


aExothermic

✓


bEndothermic

✖


cNon-catalytic

✖


dAutocatalytic

✖


View Answer Exothermic

In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process___________________?


aUses lower grade phosphate rock

✖


bRequires lower capital investment in the plant

✖


cProduces lower purity acid

✓


d Is very costly

✖



Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it___________________?


aHas a pungent smell

✖


bVaporises at normal temperature

✓


cIs toxic and highly corrosive

✖


dIs in short supply

✖



pH value of soil is maintained at ______________ by the addition of fertiliser for optimum growth and health of the plant?


a4-5

✖


b7-8

✓


c 9-10

✖


d12-13

✖


View Answer 7-8

Which of the following fertilisers contains the least percentage of nitrogen ?


aLiquid ammonia

✖


bUrea

✖


cAmmonium phosphate

✓


dAmmonium sulphate

✖


View Answer Ammonium phosphate

Heating a mixture of phosphate rock, coke and sand in an electric furnace produces___________________?


aPhosphoric acid

✖


bAmmonium phosphate

✖


cPhosphorous

✓


dSuperphosphate

✖


View Answer Phosphorous

Catalyst used in steam reforming of naphtha is ___________________?


aBauxite

✖


bCobalt

✖


cNickel oxide on alumina support

✓


dChromium

✖



Liquid ammonia and 60% nitric acid reaction (which produces ammonium nitrate) is___________________?


aExothermic

✓


bEndothermic

✖


cAutocatalytic

✖


dNone of these

✖


View Answer Exothermic

Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in ‘gas chamber’ is about ______________ ppm?


a< 1

✓


b10-100

✖


c100-200

✖


d100-1000

✖


View Answer < 1

For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than ______________ ppm?


a10000

✖


b 5

✓


c500

✖


d1000

✖


View Answer 5

Goto Page No.

Page 42 of 843

Alphabetical MCQs Categories
—

Here below You find all kind of categories of MCQs in alphabetical order.


"Comprehensive Collection of MCQs: Alphabetically Organized by Subject"
—

"Discover an extensive collection of multiple-choice questions (MCQs) neatly categorized by subject from A to Z. This resource is designed for anyone eager to explore various topics in a straightforward and organized manner. Whether you're a student preparing for exams, an educator seeking supplementary materials, or simply curious about different subjects, this compilation offers a convenient way to learn and assess your knowledge. With questions arranged alphabetically, navigation is effortless, allowing you to delve into subjects of interest at your own pace. Engage, learn, and expand your understanding with this accessible and comprehensive repository of MCQs!"


BolPakistan

bolpakistan.com.pk includes Job Mcqs and Pak Mcqs is the Top Largest Mcqs Forum in World, in which you can read Mcqs of All Subjects, PPSC test preparation, FPSC, NTS and PPSC PAST PAPERS, PPSC PAST MCQS. A Collection of Repeated MCQs for JOBs seekers.

Copyright © 2024, Designed & Developed by BolPakistan